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In my opinion logfile navigator is much better than grafana, I use grafana to view a lot of microservices docker logs, but it's too tedious for me (even if depends on your specific use case).

This one, on the other hand, is cleaner and lets you find what you're looking for quickly. And, last but not least, is much lighter.

I'm thinking of logs that are configured to ship as Json but sometimes you have no grafana or have local logs (tests run locally in container) and would like to search through them efficiently

Currently working exactly on that https://gitlab.com/makapuf/treewalker (even if it could always use some love)

I use vnlog and feedgnuplot to massage and plot data on the console all the time. It's even less than a tui, but might be what you want.

If you're fine with CLIs, maybe my Kelora project is worth a look. It's a very flexible log processor with built-in scripting: https://kelora.dev

A good friend of mine made this: https://github.com/DhruvikDonga/log_analyzer